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Showing posts with the label Vectorization

Assign Multiple Values To Multiple Slices Of A Numpy Array At Once

I have a numpy array, a list of start/end indexes that define ranges within the array, and a list o… Read more Assign Multiple Values To Multiple Slices Of A Numpy Array At Once

Numpy Vectorized 2d Array Operation Error

I'm trying to apply a vectorized function over a 2-d array in numpy row-wise, and I'm encou… Read more Numpy Vectorized 2d Array Operation Error

Repeat But In Variable Sized Chunks In Numpy

I have an array that is the concatenation of different chunks: a = np.array([0, 1, 2, 10, 11, 20, 2… Read more Repeat But In Variable Sized Chunks In Numpy

Iterating Without For Loop In Numpy Array

I need to do logical iteration over numpy array, which's values depend on elements of other arr… Read more Iterating Without For Loop In Numpy Array

Efficiently Replace Part Of Value From One Column With Value From Another Column In Pandas Using Regex?

I have a pandas dataframe df with dates as strings: Date1 Date2 2017-08-31 1970-01-01 17:3… Read more Efficiently Replace Part Of Value From One Column With Value From Another Column In Pandas Using Regex?

Vectorize Numpy Mean Across The Slices Of An Array

Is there a way to vectorize a function so that the output would be an array of means where each mea… Read more Vectorize Numpy Mean Across The Slices Of An Array

Numpy.vectorize: Why So Slow?

The expit function, in scipy.special, is a vectorized sigmoid function. It computes 1 / (1+e^(-x)),… Read more Numpy.vectorize: Why So Slow?

Vectorizing Triple For Loop In Python/numpy With Different Array Shapes

I am new in Python/Numpy and is trying to improve my triple for loop into a more efficient calculat… Read more Vectorizing Triple For Loop In Python/numpy With Different Array Shapes